Johnni Winther
5518abf1c7
This updates the message report for non-exhaustive switch statements and expressions to include the witness in the problem message and a reduced witness, which doesn't include properties that fully cover the static type. The message is also split into two messages; one for switch statements and one for switch expressions, allowing for a better wording regarding the default/wildcard pattern case. Change-Id: I17db657ef12ade5d47fa96bf69b8807e33ed5b8c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293040 Reviewed-by: Paul Berry <paulberry@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com>
23 lines
838 B
Plaintext
23 lines
838 B
Plaintext
library /*isNonNullableByDefault*/;
|
|
//
|
|
// Problems in library:
|
|
//
|
|
// pkg/front_end/testcases/patterns/switchExpression_empty.dart:5:16: Error: The type 'dynamic' is not exhaustively matched by the switch cases since it doesn't match 'Object()'.
|
|
// Try adding a wildcard pattern or cases that match 'Object()'.
|
|
// f(x) => switch(x) {};
|
|
// ^
|
|
//
|
|
import self as self;
|
|
import "dart:_internal" as _in;
|
|
|
|
static method f(dynamic x) → dynamic
|
|
return let final Never #t1 = block {
|
|
Never #t2;
|
|
#L1:
|
|
switch(x) /*isExplicitlyExhaustive*/ {
|
|
#L2:
|
|
default:
|
|
throw new _in::ReachabilityError::•("`null` encountered as case in a switch expression with a non-nullable type.");
|
|
}
|
|
} =>#t2 in throw new _in::ReachabilityError::•("`null` encountered as the result from expression with type `Never`.");
|